Modification of carbon screen-printed electrodes by adsorption of chemically synthesized Bi nanoparticles for the voltammetric stripping detection of Zn(II), Cd(II) and Pb(II)

被引：130

作者：

Granado Rico, Ma Angeles ^{[1
]}

Olivares-Marin, Mara ^{[2
]}

Pinilla Gil, Eduardo ^{[1
]}

机构：

[1] Univ Extremadura, Dept Analyt Chem, E-06071 Badajoz, Spain

[2] Univ Extremadura, Dept Organ & Inorgan Chem, E-06071 Badajoz, Spain

来源：

TALANTA | 2009年 / 80卷 / 02期

关键词：

Screen-printed electrodes; Bismuth nanoparticles; Heavy metals; Stripping voltammetry; Water samples; BISMUTH-FILM ELECTRODES; ELECTROCHEMICAL SENSORS; HEAVY-METALS; CADMIUM(II); LEAD(II); ELECTROANALYSIS; MICROELECTRODE; DESIGN; FIELD;

D O I：

10.1016/j.talanta.2009.07.039

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple procedure for the chemical synthesis of bismuth nanoparticles and subsequent adsorption on commercial screen-printed carbon electrodes offer reliable quantitation of trace zinc, cadmium and lead by anodic stripping square-wave voltammetry in nondeareated water samples. The influence of two hydrodynamic configurations (convective cell and flow cell) and the effect of various experimental variables upon the stripping signals at the bismuth-coated sensor are explored. The square-wave peak current signal is linear over the low ng mL(-1) range (120 s deposition), with detections limits ranging from 0.9 to 4.9 ng mL(-1) and good precision. Applicability to waste water certified reference material and drinking water samples is demonstrated. The attractive behaviour of the new disposable Bi nanoparticles modified carbon strip electrodes. coupled with the negligible toxicity of bismuth, hold great promise for decentralized heavy metal testing in environmental and industrial effluents waters. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：631 / 635

页数：5

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